.video-guide { --video-accent: #126843; --video-accent-soft: #e8f2eb; }
[data-theme="dark"] .video-guide { --video-accent: #a6e8be; --video-accent-soft: #153624; }
.video-guide [hidden] { display: none !important; }
.video-guide img { height: auto; }
.video-guide main { padding-bottom: 90px; }
.video-guide .page-shell { max-width: 1440px; }
.video-guide .portal-brand span { max-width: 240px; }
.video-subnav { display: flex; gap: 24px; overflow-x: auto; padding: 21px 0; border-bottom: 1px solid var(--rule); font-size: 13px; }
.video-subnav a { flex: 0 0 auto; color: var(--muted); text-decoration: none; padding-block: 4px; }
.video-subnav a[aria-current="page"] { color: var(--ink); text-decoration: underline; text-underline-offset: 7px; }
.video-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 7%; align-items: center; padding: 84px 0 68px; }
.video-hero h1, .video-page-title { font-size: clamp(48px, 6.4vw, 96px); line-height: .98; letter-spacing: -.07em; font-weight: 500; margin: 0 0 28px; }
.video-hero .lead { font-size: 18px; max-width: 49ch; color: var(--muted); }
.video-guide .kicker { font-size: 11px; letter-spacing: .055em; margin-bottom: 24px; }
.video-guide figure { margin: 0; }
.video-guide figcaption { font-size: 12px; color: var(--muted); margin-top: 12px; line-height: 1.6; }
.hero-frame { background: var(--field); padding: 18px; border: 1px solid var(--rule); transform: rotate(-1deg); }
.hero-frame img { display: block; width: 100%; aspect-ratio: 16/9; object-fit: contain; }
.hero-frame .frame-bar { display: flex; justify-content: space-between; gap: 12px; font: 11px var(--mono); margin-bottom: 16px; color: var(--muted); }
.hero-frame figcaption { transform: rotate(1deg); }
.video-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 27px; }
.video-button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 44px; padding: 10px 18px; border: 1px solid var(--rule-strong); border-radius: 5px; background: var(--paper); color: var(--ink); text-decoration: none; font-size: 13px; font-weight: 600; }
.video-button:hover { background: var(--field); border-color: var(--ink); }
.video-button.primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.video-button.primary:hover { opacity: .85; }
.video-stats { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--rule); }
.video-stats div { padding: 26px 20px; border-right: 1px solid var(--rule); }
.video-stats div:first-child { padding-left: 0; }
.video-stats div:last-child { border: 0; }
.video-stats strong { display: block; font-size: 39px; font-weight: 500; letter-spacing: -.05em; }
.video-stats span { color: var(--muted); font-size: 12px; }
.video-section { margin-top: 80px; scroll-margin-top: 150px; }
.video-section > header { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 28px; }
.video-section h2 { font-size: clamp(28px, 3.3vw, 46px); line-height: 1.12; letter-spacing: -.055em; font-weight: 500; margin: 0; }
.video-section > header p { max-width: 56ch; color: var(--muted); font-size: 14px; margin: 0; }
.video-intro { padding: 65px 0 24px; max-width: 1020px; }
.video-intro .video-page-title { font-size: clamp(40px, 5.3vw, 74px); }
.video-intro > p:not(.kicker) { font-size: 17px; color: var(--muted); max-width: 78ch; }
.video-note { padding: 20px 24px; background: var(--field); border-left: 3px solid var(--rule-strong); font-size: 13px; color: var(--muted); line-height: 1.7; }
.video-note strong { color: var(--ink); }
.video-note.method { margin-top: 30px; }
.film-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 35px 24px; }
.film-card { min-width: 0; }
.film-card .poster-link { display: block; overflow: hidden; background: var(--field); border: 1px solid var(--rule); }
.film-card img { display: block; width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: transform 180ms ease; }
.film-card .poster-link:hover img { transform: scale(1.025); }
.film-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; color: var(--muted); font: 11px/1.6 var(--mono); margin: 16px 0 10px; }
.film-card h3 { font-size: 20px; line-height: 1.3; font-weight: 600; letter-spacing: -.025em; margin: 0 0 10px; }
.film-card h3 a { text-decoration: none; }
.film-card h3 a:hover { text-decoration: underline; text-underline-offset: 4px; }
.film-card p { color: var(--muted); font-size: 13px; margin: 0 0 14px; }
.film-card .card-bottom { font-size: 12px; display: flex; flex-wrap: wrap; gap: 14px; }
.priority { display: inline-block; color: var(--video-accent); background: var(--video-accent-soft); padding: 3px 8px; border-radius: 3px; font-size: 11px; }
.video-filters { display: flex; flex-wrap: wrap; align-items: end; gap: 14px; padding: 22px 0; border-top: 1px solid var(--rule); margin: 20px 0; }
.video-filters label { display: flex; flex-direction: column; gap: 7px; font-size: 12px; color: var(--muted); min-width: 155px; }
.video-filters label.search-field { flex: 1; min-width: 200px; }
.video-filters input, .video-filters select { min-height: 44px; border: 1px solid var(--rule-strong); background: var(--paper); border-radius: 4px; padding: 10px 12px; width: 100%; color: var(--ink); font-size: 14px; }
.video-filters select { max-width: 300px; }
.filter-count { font: 12px var(--mono); color: var(--muted); margin: 10px 0 22px; }
.empty-state { padding: 48px 20px; text-align: center; border: 1px dashed var(--rule-strong); color: var(--muted); }
.screen-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px 24px; }
.screen-card { border: 1px solid var(--rule); min-width: 0; }
.frame-open { border: 0; background: var(--field); width: 100%; padding: 0; display: block; overflow: hidden; position: relative; }
.frame-open img { width: 100%; display: block; aspect-ratio: 16/9; object-fit: contain; }
.frame-open::after { content: '↗'; position: absolute; bottom: 9px; right: 9px; width: 28px; height: 28px; display: grid; place-items: center; background: #fff; color: #111; border: 1px solid #d6d6d6; border-radius: 50%; }
.screen-copy { padding: 18px; }
.screen-copy .film-meta { margin: 0 0 10px; font-size: 10px; }
.screen-copy h2 { font-size: 19px; line-height: 1.3; font-weight: 600; letter-spacing: -.025em; margin: 0 0 10px; }
.screen-copy p { font-size: 13px; color: var(--muted); margin: 0 0 12px; }
.screen-copy .card-bottom { display: flex; justify-content: space-between; gap: 10px; font-size: 12px; }
.screen-copy .screen-film { font-size: 12px; line-height: 1.5; margin-bottom: 12px; }
.motion-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 50px 30px; }
.motion-card { scroll-margin-top: 150px; }
.motion-card video { width: 100%; display: block; aspect-ratio: 16/9; background: var(--field); border: 1px solid var(--rule); }
.motion-card h3 { font-size: 25px; line-height: 1.2; letter-spacing: -.035em; font-weight: 500; margin: 20px 0 14px; }
.motion-card p { color: var(--muted); font-size: 14px; }
.motion-card p strong { color: var(--ink); }
.motion-card .sampling { font-size: 12px; }
.film-overview { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: start; margin: 25px 0 40px; }
.film-overview img { display: block; width: 100%; border: 1px solid var(--rule); }
.film-overview h2 { font-size: 20px; margin: 0 0 12px; letter-spacing: -.02em; }
.film-overview p { font-size: 14px; color: var(--muted); margin: 0 0 24px; }
.study-table-wrap { overflow-x: auto; border: 1px solid var(--rule); }
.study-table { width: 100%; border-collapse: collapse; text-align: left; min-width: 980px; }
.study-table th { font: 11px var(--mono); color: var(--muted); background: var(--field); padding: 15px; border-bottom: 1px solid var(--rule); }
.study-table td { padding: 20px 15px; border-bottom: 1px solid var(--rule); vertical-align: top; font-size: 13px; line-height: 1.65; }
.study-table tr:last-child td { border-bottom: 0; }
.study-table tr:target { background: var(--video-accent-soft); }
.study-table td:first-child { min-width: 150px; width: 15%; }
.study-table td:nth-child(2) { min-width: 150px; width: 15%; }
.study-table .time { white-space: nowrap; font: 11px var(--mono); color: var(--muted); margin-top: 7px; }
.study-table .row-film { font-size: 11px; display: block; margin-bottom: 10px; }
.study-table .row-kind { display: block; color: var(--muted); font-size: 11px; margin-top: 5px; }
.study-table td p { margin: 7px 0 0; }
.study-table .frame-open img { width: 150px; }
.study-table .sample-time { font: 10px var(--mono); color: var(--muted); margin-top: 8px; }
.study-table .source-link { display: inline-block; margin-top: 7px; font-size: 11px; }
.video-dialog { width: min(1280px, calc(100% - 32px)); max-height: calc(100vh - 32px); padding: 20px; border: 1px solid var(--rule); background: var(--paper); color: var(--ink); border-radius: 8px; }
.video-dialog::backdrop { background: #000b; }
.video-dialog .dialog-top { display: flex; gap: 20px; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.video-dialog h2 { margin: 0; font-size: 20px; }
.video-dialog img { width: 100%; max-height: 65vh; object-fit: contain; background: var(--field); display: block; }
.video-dialog .dialog-caption { font-size: 13px; color: var(--muted); }
.video-dialog .dialog-source { font-size: 13px; }
.video-article { max-width: 960px; }
.video-article h1 { font-size: clamp(40px, 5vw, 74px); line-height: 1.02; font-weight: 500; letter-spacing: -.065em; margin-top: 60px; }
.video-article h2 { font-size: 29px; line-height: 1.2; letter-spacing: -.035em; font-weight: 500; margin-top: 54px; }
.video-article p, .video-article li { line-height: 1.8; font-size: 15px; }
.video-article li { margin-bottom: 12px; }
.video-article table { border-collapse: collapse; width: 100%; font-size: 13px; line-height: 1.65; }
.video-article th, .video-article td { text-align: left; padding: 14px 12px; border: 1px solid var(--rule); vertical-align: top; }
.video-article th { background: var(--field); }
.video-article code { font-size: 12px; overflow-wrap: anywhere; }
.video-article .markdown-table { overflow-x: auto; }
.video-footer { border-top: 1px solid var(--rule); padding: 32px 0; color: var(--muted); font-size: 12px; line-height: 1.7; }
.video-footer p { max-width: 100ch; }
.video-guide :target { scroll-margin-top: 160px; }
@media (max-width: 1080px) {
  .video-hero { padding-top: 60px; gap: 35px; }
  .film-grid, .screen-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
  .video-guide .page-shell { width: calc(100% - 32px); }
  .video-subnav { gap: 22px; font-size: 12px; }
  .video-hero, .film-overview { grid-template-columns: 1fr; gap: 30px; }
  .video-hero { padding: 40px 0; }
  .video-hero h1 { max-width: 9ch; }
  .video-hero .lead { font-size: 16px; }
  .hero-frame { transform: none; padding: 10px; }
  .hero-frame figcaption { transform: none; }
  .video-stats { grid-template-columns: 1fr 1fr; }
  .video-stats div { padding: 18px 16px; }
  .video-stats div:nth-child(2) { border-right: 0; }
  .video-stats div:nth-child(3), .video-stats div:nth-child(4) { border-top: 1px solid var(--rule); }
  .video-stats div:nth-child(3) { padding-left: 0; }
  .video-stats strong { font-size: 31px; }
  .video-section { margin-top: 50px; }
  .video-section > header { display: block; }
  .video-section > header p { margin-top: 18px; }
  .film-grid, .screen-grid, .motion-grid { grid-template-columns: 1fr; }
  .video-filters label { width: 100%; }
  .video-filters select { max-width: none; }
  .video-intro { padding-top: 40px; }
  .video-note { padding: 16px; }
  .video-dialog { padding: 14px; }
  .video-article th, .video-article td { padding: 9px; min-width: 145px; }
  .video-article table { font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .film-card img { transition: none; }
}